image.serviceRating {
  width: 60px;
  height: 12px;
  -moz-image-region: rect(0px 60px 12px 0px);
}

image.serviceRating[rating="1"] {
  -moz-image-region: rect(12px 60px 24px 0px);
}
image.serviceRating[rating="2"] {
  -moz-image-region: rect(24px 60px 36px 0px);
}
image.serviceRating[rating="3"] {
  -moz-image-region: rect(36px 60px 48px 0px);
}
image.serviceRating[rating="4"] {
  -moz-image-region: rect(48px 60px 60px 0px);
}
image.serviceRating[rating="5"] {
  -moz-image-region: rect(60px 60px 72px 0px);
}